High-stability trolley convenient to move and lift for testing machine

Abstract

The utility model provides a high-stability trolley convenient to move and lift for a testing machine, which comprises a base, a plurality of guide columns and a plurality of guide columns, the two groups of bearing plates are respectively arranged on the two adjacent guide columns in a sliding manner; the lifting assembly is installed on the base, and the output end of the lifting assembly is connected with the bearing plate; the positioning bearing part is rotationally arranged on the bearing plate, and a plurality of positioning grooves are formed in the upper end of the positioning bearing part; by arranging the movable test trolley and placing the test trolley under the handler, a test head located on the test trolley can be stably and uniformly stressed in the working process of the handler, the test precision is improved, and the problem that in the prior art, the test precision is low due to the fact that a cantilever structure is adopted for testing is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of chip testing, in particular to a high-stability trolley for a testing machine which is easy to move and lift. Background Art

[0002] A probe station (Prober) is an important device used to test the electrical performance of semiconductor devices. A handler (Handler) is a key device in the semiconductor testing process. It is mainly used to automatically transport chips to the test position and place the chips in categories after the test is completed. Test manufacturers that usually have these two types of equipment will require a bracket to carry the test head to move between the two types of equipment according to different test requirements.

[0003] Chinese patent CN202322384698.9 discloses a chip testing bracket with stable operation, including a horizontal adjustment component lifted and lowered on a column and an installation component arranged on the horizontal adjustment component, the horizontal adjustment component including a support plate lifted and lowered on the column, an adjustment plate arranged on the support plate through three sets of cross roller bearings, and a locking member arranged on the support plate; the utility model adopts a structure of three sets of cross roller bearings, which is convenient to process, install and maintain, and the test head can stop stably at any position on the plane, the operation is stable, the positioning effect is good, and the stability of the bracket is improved, thereby solving the technical problems that traditional chip testing brackets mostly adopt a structure of through shaft plus rolling bearings and thrust bearings, the processing is relatively complicated, the test head cannot stop stably on the plane, and the operation is inconvenient.

[0004] However, in this technical solution, the bracket as a whole carries the test head to the handler and performs the handler test. Since the force direction of the handler is vertically downward, the cantilever structure test head is subjected to uneven force and instability when receiving vertical downward pressure, which affects the working accuracy of the test head. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies of the prior art and to provide a trolley for a testing machine which is highly stable and easy to move and lift. By setting a movable test trolley and placing the test trolley directly under a handler, the test head on the test trolley can be subjected to a stable and uniform force during the operation of the handler, thereby improving the test accuracy and solving the problem of low test accuracy caused by the prior art using a cantilever structure for testing.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-stability trolley for a testing machine that is easy to move and lift, characterized by comprising:

[0008] A base, on which a plurality of guide columns are symmetrically arranged;

[0009] A load-bearing plate, wherein two groups of the load-bearing plates are respectively slidably disposed on two adjacent guide pillars;

[0010] A lifting assembly, the lifting assembly is installed on the base, and an output end of the lifting assembly is connected to the carrying plate;

[0011] The positioning bearing part is rotatably arranged on the bearing plate, and a plurality of positioning grooves are arranged at the upper end of the positioning bearing part.

[0012] As an improvement, the positioning groove is a rectangular structure, and an inclined guide portion is provided at its upper end.

[0013] As an improvement, it further comprises an adjusting portion, which is arranged at one end of the positioning bearing portion, changes the distance between one end of the positioning bearing portion and the bearing plate, and adjusts the horizontal inclination angle of the positioning bearing portion.

[0014] As an improvement, the adjusting part includes an adjusting bolt and a locking nut for fixing the position of the adjusting bolt. The adjusting bolt is threadedly matched with the positioning bearing part, and its bottom passes through the lower end surface of the positioning bearing part and abuts against the bearing plate.

[0015] As an improvement, the lifting assembly includes:

[0016] X-shaped scissor parts, two sets of X-shaped scissor parts are arranged below the bearing plate;

[0017] A connecting piece, the connecting piece connects the bottom of one side of the two sets of X-shaped scissor parts, and is slidably disposed on the base; and

[0018] A scissor drive unit drives the connecting member to reciprocate.

[0019] As an improvement, the upper left end of the X-shaped scissor fork portion is hinged to the bottom of the bearing plate, and the upper right end is hinged through a connecting seat and slidably disposed below the bearing plate;

[0020] The lower left end of the X-shaped scissor fork part is hinged on the base, and the lower right end is hinged on the connecting piece through a connecting seat.

[0021] As an improvement, the scissors drive unit includes a drive motor and a transmission rod connected to an output end of the drive motor, and the transmission rod is in transmission connection with a connecting piece.

[0022] As an improvement, the X-shaped scissors part includes two hinged support plates.

[0023] As an improvement, a limiting step is provided on the guide column, and the bearing plate is slidably arranged above the limiting step.

[0024] As an improvement, a guide sleeve is further provided on the bearing plate, and the guide sleeve is sleeved on the guide column.

[0025] The beneficial effects of the utility model are:

[0026] (1) The utility model provides a movable test trolley and places the test trolley directly under the handler, so that during the operation of the handler, the test head on the test trolley can be subjected to a stable and uniform force, thereby improving the test accuracy.

[0027] (2) The utility model realizes rapid positioning of the clamping assembly by providing a positioning groove on the positioning bearing portion.

[0028] (3) The utility model realizes stable lifting of the test head through a lifting component of a scissor-type structure in cooperation with a scissor-type driving unit, thereby facilitating the installation and debugging of the test head.

[0029] (4) The utility model realizes rapid adjustment of the horizontal angle of the test head by setting the adjustment part, thereby satisfying the position adjustment of the test head under different working conditions.

[0030] In summary, the utility model has the advantages of high testing accuracy, convenient lifting, and the ability to adjust the horizontal angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 This is a partial enlarged schematic diagram of location I of the utility model;

[0033] Figure 3 This is a schematic diagram of the utility model in use. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0036] Embodiment 1

[0037] like Figure 1-3 As shown, this embodiment provides a high-stability, easy-to-move and easy-to-lift test machine trolley, comprising:

[0038] A base 1, on which a plurality of guide columns 2 are symmetrically arranged, and a movable wheel is arranged at the bottom thereof, so as to facilitate the transfer of the trolley; a support column may also be arranged at the bottom thereof, and other transport devices may also be used to transfer the trolley; since the trolley body is light, it is convenient to transfer;

[0039] The two groups of the bearing plates 3 are respectively slidably disposed on two adjacent guide posts 2;

[0040] A lifting assembly 4, wherein the lifting assembly 4 is mounted on the base 1, and an output end thereof is connected to the carrying plate 3;

[0041] The positioning bearing part 5 is rotatably arranged on the bearing plate 3 , and a plurality of positioning grooves 51 are provided at the upper end of the positioning bearing part 5 . The positioning protrusions 11 on the clamping component 10 cooperate with the positioning grooves 51 , so that the clamping component 10 can be quickly positioned and installed on the positioning bearing part 5 .

[0042] Preferably, the positioning groove 51 is a rectangular structure, and an inclined guide portion 52 is provided at its upper end to facilitate the component to be received to smoothly enter the positioning groove 51 for positioning; of course, other shapes can also meet the requirements, such as V-shape, inverted trapezoid, etc.

[0043] Preferably, the lifting assembly 4 comprises:

[0044] X-shaped scissor parts 41, two groups of the X-shaped scissor parts 41 are arranged below the bearing plate 3, preferably, the X-shaped scissor parts 41 include two hinged support plates 411;

[0045] A connecting member 42, the connecting member 42 connects the bottom of one side of the two sets of X-shaped scissor parts 41, and is slidably disposed on the base 1 through a slider guide rail;

[0046] The scissor drive unit 43 drives the connecting member 42 to reciprocate, thereby driving the X-shaped scissor unit 41 to rise and fall.

[0047] Further, the upper left end of the X-shaped scissor part 41 is hinged to the bottom of the carrying plate 3, and the upper right end is hinged through a connecting seat 44 and slidably disposed below the carrying plate 3; preferably, the connecting seat 44 is slidably disposed below the carrying plate 3 through a slider guide rail;

[0048] The left lower end of the X-shaped scissor part 41 is hinged on the base 1 , and the right lower end is hinged on the connecting member 42 via a connecting seat 44 .

[0049] Preferably, the scissors-type driving part 43 includes a driving motor 431 and a transmission rod 432 connected to the output end of the driving motor 431, and the transmission rod 432 is in driving connection with the connecting member 42; the transmission rod 432 is preferably a screw rod, and the connecting member 42 is provided with a thread matching the screw rod, and the screw rod is driven to rotate by the driving motor 431, thereby driving the connecting member 42 to move back and forth, thereby driving the scissors-type driving part 43 to be lifted and lowered; of course, the scissors-type driving part 43 of the present application is not limited to the above-mentioned driving motor 431 to drive the screw rod transmission method, and other transmission methods for realizing linear motion may also be applicable to the present application, such as cylinder transmission, hydraulic transmission, gear rack transmission, etc.

[0050] As an improvement, a limiting step 21 is provided on the guide column 2 , and the bearing plate 3 is slidably disposed above the limiting step 21 .

[0051] Preferably, the bearing plate 3 is further provided with a guide sleeve 31, which is sleeved on the guide column 2 to avoid long-term friction between the guide column 2 and the bearing plate 3, resulting in wear and inconvenience in maintenance. The guide sleeve 31 can be replaced regularly to improve the lifting accuracy.

[0052] Embodiment 2

[0053] like Figure 1-2 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that:

[0054] In this embodiment, an adjusting portion 6 is further included. The adjusting portion 6 is disposed at one end of the positioning bearing portion 5 to change the distance between one end of the positioning bearing portion 5 and the bearing plate 3 and adjust the horizontal tilt angle of the positioning bearing portion 5 .

[0055] Preferably, the adjusting portion 6 includes an adjusting bolt 61 and a locking nut 62 for fixing the position of the adjusting bolt 61 . The adjusting bolt 61 is threadedly matched with the positioning bearing portion 5 , and its bottom passes through the lower end surface of the positioning bearing portion 5 and abuts against the bearing plate 3 .

[0056] It should be noted that by rotating the adjusting bolt 61, the horizontal tilt angle of the positioning bearing part 5 is changed, thereby adjusting the angle of the clamping assembly 10 mounted on the positioning bearing part 5, and then changing the horizontal tilt angle of the test head 20 to meet the working requirements of different tilt angle states.

[0057] Of course, the present application is not limited to the above-mentioned adjustment method using the adjusting bolt. Other methods that can change the distance between one end of the positioning bearing part 5 and the bearing plate 3 can also be applicable to the present application, such as cylinder drive, gear rack drive, etc.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high-stability, easy-to-move and lift test machine trolley, characterized in that: include: A base, on which a plurality of guide columns are symmetrically arranged; A load-bearing plate, wherein two groups of the load-bearing plates are respectively slidably disposed on two adjacent guide pillars; A lifting assembly, the lifting assembly is installed on the base, and an output end of the lifting assembly is connected to the carrying plate; The positioning bearing part is rotatably arranged on the bearing plate, and a plurality of positioning grooves are arranged at the upper end of the positioning bearing part.

2. A high-stability, easy-to-move and easy-to-lift testing machine trolley according to claim 1, characterized in that: An inclined guide portion is provided at the upper end portion of the positioning groove.

3. A high-stability, easy-to-move and easy-to-lift testing machine trolley according to claim 1, characterized in that: It also includes an adjusting part, which is arranged at one end of the positioning bearing part, changes the distance between one end of the positioning bearing part and the bearing plate, and adjusts the horizontal inclination angle of the positioning bearing part.

4. A high-stability, easy-to-move and easy-to-lift testing machine trolley according to claim 3, characterized in that: The adjusting part comprises an adjusting bolt and a locking nut for fixing the position of the adjusting bolt. The adjusting bolt is threadedly matched with the positioning bearing part, and the bottom of the adjusting bolt passes through the lower end surface of the positioning bearing part and abuts against the bearing plate.

5. The high-stability, easy-to-move and easy-to-lift testing machine trolley according to claim 1 is characterized in that: The lifting assembly comprises: X-shaped scissor parts, two sets of X-shaped scissor parts are arranged below the bearing plate; A connecting piece, the connecting piece connects the bottom of one side of the two sets of X-shaped scissor parts, and is slidably disposed on the base; and A scissor drive unit drives the connecting member to reciprocate.

6. The high-stability, easy-to-move and easy-to-lift testing machine trolley according to claim 5, characterized in that: The upper left end of the X-shaped scissor fork portion is hinged to the bottom of the bearing plate, and the upper right end is hinged through a connecting seat and slidably disposed below the bearing plate; The left lower end of the X-shaped scissor fork part is hinged on the base, and the right lower end is hinged on the connecting piece through a connecting seat.

7. The high-stability, easy-to-move and easy-to-lift trolley for a testing machine according to claim 5, characterized in that: The scissor drive unit comprises a driving motor and a transmission rod connected to the output end of the driving motor, and the transmission rod is drivingly connected to the connecting piece.

8. The high-stability, easy-to-move and easy-to-lift trolley for a testing machine according to claim 5, characterized in that: The X-shaped scissor part comprises two hinged support plates.

9. The high-stability, easy-to-move and easy-to-lift testing machine trolley according to claim 1, characterized in that: The guide column is provided with a limiting step, and the bearing plate is slidably arranged above the limiting step.

10. The high-stability, easy-to-move and easy-to-lift trolley for a testing machine according to claim 1, characterized in that: The bearing plate is also provided with a guide sleeve, and the guide sleeve is sleeved on the guide column.

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